PIZZATO Switch FD502

08/03/2020

HVAC essential! Three steps to accurately calculate the cooling capacity of central air conditioning

The cooling capacity calculation of central air-conditioning is divided into three steps: 1. Calculate the actual cooling capacity required: Calculate according to the practical area of ​​the room (carpet area, the floor area of ​​the home can be deducted from the floor area); 150 watts per square meter;

08/14/2020

How to distinguish the quality of central air conditioning installation materials

First of all, we need to know what are the necessary installation materials for central air conditioning installation? There are mainly 4 kinds of installation materials necessary for central air conditioning installation:

08/08/2020

Causes and elimination of air intake in the refrigeration system of industrial chillers

Water-cooled industrial chillers and air-cooled industrial chillers are generally used in long-term working conditions. If there is a little leakage in the refrigeration system, air will enter the refrigeration system of the industrial chiller over time.

05/19/2023

Why is My Central AC Running but Not Blowing Air?

Air conditioners are used very frequently in summer, and the possibility of problems is very high. Air conditioner common faults are ·Blockage of the refrigeration system, the air filter, the air inlet and outlet, etc

08/16/2020

What are the precautions for installing the piston ring of ammonia refrigeration accessories

Piston ring is a small part of piston compressor in ammonia refrigeration system. It is used as a metal ring for sealing inside the piston. The piston ring includes a gas ring and an oil ring. It may seem small but it plays an important role.

04/20/2022

What is A Level Transmitter?

Level transmitter is the extension and development of pressure transmitter technology. It realizes the accurate measurement and transmission of the volume, liquid height and weight of water

07/18/2020

Maintenance method for wear of refrigerator refrigeration compressor

　The application of screw refrigeration compressors is becoming more and more common, and some of them have entered the period of frequent failures. When the abrasion of the female and male rotors, body, and exhaust end seat of the refrigeration compressor reaches above 0.65rnm, vibration will occur when the refrigeration compressor is running, the sound is abnormal, the cooling capacity is reduced, and the compressor cannot work normally.

06/29/2020

How the compressor works

07/31/2020

Five common problems of refrigeration system

Trouble phenomenon: The cooling effect of the whole machine is poor, the water outlet is only slightly cool, and the pressure on the high pressure side and the low pressure side are found to be low when checked with the manifold pressure gauge (under the normal speed of the compressor

09/03/2020

Application of Siemens 300CPU and Aoyuexin 300PLC in Air Compressor Pneumatic Control System

1 Introduction As the air source equipment of the pneumatic control system, the air compressor's stability and reliability during operation are directly related to production safety. Since most of the early electrical controls were relay circuits,